Never smile at a crocodile . . . if attacked fight back. This advice
comes from two Australian doctors who have treated the reptiles’ victims.
In the 10 years to June 1991, 16 attacks on people were reported in the
Northern Territory. Four were fatal. But six of those who survived escaped
by fighting back – three were released after a tug of war with the crocodile,
two with help from a friend. The others escaped by gouging the crocodile
in the eyes or nostrils.
The jaws of the Australian saltwater crocodile contain 75 conical teeth.
The teeth strike with such force that they crush tissues and cut off the
supply of blood to organs. Those who died were either bitten in half or
decapitated.
Instructions on how to survive a crocodile attack are published in the
latest issue of the Medical Journal of Australia. Allan Mekisic and Jonathan
Wardill tell readers: ‘If one is unfortunate enough to be attacked, it is
advisable to retaliate.’
Mekisic, from the Royal Prince Alfred Hospital in Camperdown, New South
Wales, and Wardill from the Royal Darwin Hospital, say that most of the
attacks could have been avoided. Half the victims, and all those who died,
had been drinking. Many ignored warning signs: 13 of the victims were swimming
or wading in fading light or at night. One was attacked while asleep in
a tent, 10 metres from the river bank.
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Saltwater crocodiles have been protected in the Northern Territory since
1971, and since then the population has increased from about 5000 to 50
000. ‘Given the influx of people to the outdoors in recent years, the incidence
of attack is surprisingly low,’ say Mekisic and Wardill.
The journal also includes the first report of bites from an Australian
marsupial. On Rottnest Island off the west coast near Perth, 72 people have
needed treatment after being bitten by the quokka, a wallaby slightly larger
than a domestic cat. Thomas McDonagh from the Fremantle Hospital says that
people should not pat or feed the animal – all but two of the victims were
bitten in this way.
Doctors from South Australia and Queensland describe the perils of picking
up a platypus. The male platypus has spurs on its hind legs which are probably
used in combat during the mating season. As in that other Australian monotreme,
the echidna, the platypus has poison glands at the base of its spurs.
The doctors describe the case of a man who picked up a small platypus
resting on a log on a river in north Queensland. The platypus spiked the
man’s hand with one of its spurs. The pain was immediate and unremitting.
‘Significant function impairment of the hand persisted for three months,
the cause of which is uncertain,’ the doctors said.
Another threat to human health is the magpie. Ophthalmologists from
Queensland advise Australians to wear ‘anti-magpie’ hats if they are anywhere
near magpie nests. They report six attacks by swooping magpies. Five of
the victims were children. They are advised to wear hats with bright ‘faces’
on the back, a tactic designed to confuse the birds.
The good news is that the number of venomous snakes is falling. Straun
Sutherland of the Commonwealth Serum Laboratory in Melbourne attributes
the decline to development in coastal areas, the spread of the poisonous
cane toad and the use of pesticides.
Between 1981 and 1991 only 18 deaths from snake bites were reported
to the CSL. Four people were bitten after picking up a snake. In one case
last Christmas, a man who had been drinking with friends dived into the
Murray River in South Australia chasing a brown snake. He was bitten after
he grabbed the snake from behind. In another incident, an amateur snake
handler was bitten by a brown snake as he played with it in a Queensland
bar.
![Astronomers have long known that understanding how star clusters come to be is key to unlocking other secrets of galactic evolution. Stars form in clusters, created when clouds of gas collapse under gravity. As more and more stars are born in a collapsing cloud, strong stellar winds, harsh ultraviolet radiation and the supernova explosions of massive stars eventually disperse the cloud, and their light can bear down on other star-forming regions in the galaxy. This process is called stellar feedback, and it means that most of the gas in a galaxy never gets used for star formation. Researching how star clusters develop can answer questions about star formation at a galactic scale. Now, the state of the art has been further developed with both Hubble and Webb working together to provide a broad-spectrum view of thousands of young star clusters. An international team of astronomers has pored over images of four nearby galaxies from the FEAST observing programme (#1783), trying to solve this mystery. Their results show that it is the most massive star clusters that clear away their gaseous shroud the fastest, and begin lighting their galaxy the earliest. The team identified nearly 9000 star clusters in the four galaxies in different evolutionary stages: young clusters just starting to emerge from their natal clouds of gas, clusters that had partially dispersed the gas (both from Webb images), and fully unobstructed clusters visible in optical light (found in Hubble images). With Webb???s ability to peer inside the gas clouds, they were able to then estimate the mass and age of each cluster from its light spectrum. This image shows a section of one of the spiral arms of Messier 51 (M51), one of the four galaxies studied in this work, as seen by Webb???s Near-Infrared Camera (NIRCam). The thick clumps of star-forming gas are shown here in red and orange, representing infrared light emitted by ionised gas, dust grains, and complex molecules such as polycyclic aromatic hydrocarbons (PAHs). Within these gas complexes, each tens or hundreds of light years across, Webb reveals the dense, extremely bright clusters of massive stars that have just recently formed. The countless stars strewn across the arm of the galaxy, many of which would be invisible to our eyes behind layers of dust, are also laid bare in infrared light. [Image description: A large, long portion of one of the spiral arms in galaxy M51. Red-orange, clumpy filaments of gas and dust that stretch in a chain from left to right comprise the arm. Shining cyan bubbles light up parts of the gas clouds from within, and gaps expose bright star clusters in these bubbles as glowing white dots. The whole image is dotted with small stars. A faint blue glow around the arm colours the otherwise dark background.]](https://images.newscientist.com/wp-content/uploads/2026/05/13114322/SEI_296271016.jpg)


